FIELD: chemistry.
SUBSTANCE: sludge with moisture content of 20-40%, which is fermented in natural conditions for at least three months, is mixed with a binder additive and mineral components, granulated at temperature of 45-95°C and the granules are then dried to moisture content of 8-16%. The binder additive - sodium humate - is used in amount of 2-3% of the dry mass of the sludge, and mineral components: nitrogen source - carbamide and potassium source - potassium chloride - are used in amount of 5-7% and 5-6% of the dry mass of the sludge, respectively.
EFFECT: obtained granules contain a balanced set of nutrients in an easy-to-assimilate form for a wide range of crops.
2 cl, 2 ex
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